TGFB1 and neoplasm: Median (range) cell density was significantly lower for TGFβ-expressing macrophages and pSMAD3-expressing macrophages [1 (0–29) cells/mm2 and 2 (0–93) cells/mm2, respectively, Supplementary Table S3] than for TGFβ-expressing tumor cells and pSMAD3-expressing tumor cells [4 (0–95) and 524 (0–4723), respectively, p < 0.01].